Medium severity · published Aug 12, 2026
CVE-2026-15141
Referer Validation Bypass in TL-WR820N Web Management Interface
5.7
CVSS
0.2%
EPSS
No
On KEV
Description
The web
interface of the affected
device relies on the HTTP referrer header as part of
request validation. Requests containing empty Referer value, or omitting
the Referer header entirely, may be accepted and processed due to insufficient
validation logic.
Successful exploitation may allow an adjacent attacker with access to the web management
interface to obtain device configuration details and other sensitive
information.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TV
TL-WR820N v2 · TP-Link Systems Inc.
before 1.15.20 Build 260611 Rel.29552n · source: vendor
TF
Tl-wr820n Firmware · Tp-link
before 1.15.20 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15141
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15141
Product
https://www.tp-link.com/en/support/download/tl-wr820n/#Firmware
Vendor Advisory
https://www.tp-link.com/en/support/faq/5243/
Product
https://www.tp-link.com/kr/support/download/tl-wr820n/#Firmware
